Valve-spring compressor



. 1,660,374 H. M. COLLINS VALVE SPRING COMPRESSOR Filed March 5. 1926 2 Sheets-Sheet l [nun tor fl Z CoZZzrzs,

Attorney Feb. 28, 1928.v

Feb. 28, 1928. v 1,660,374

H. M. COLLINS VALVE SPRING COMPRESSOR Filed March 5, 1926 2 Sheets-Sheet 2 lrwergtor ff JZ 60235216,

Attorney Patented Feb. 28, 1928.

BETTIE M. GOLEJIINSy OI LEE; MASSAT-GHUSETTS? VALVE-SPRING CQMIPRES SORZ Application. filed March 3, 1 26.. Serial atie-7s.

This. invention. relates. toa tool. for compressing thev springs arranged around the valve stems of internal combustion eng ne motors, and has for its primary object to this general character.

To. the attainment of" this end; my tool embodies novel. structural elements that arev so combined as to-afl-ord the ready association of the tool with respect to the spring. and to be actuated by a socket or other wrench to. compress the spring between the usual end cups. and the head of the motor to permit the withdrawal of the. retaining pin and tlie consequent removal of the valve. Anadditional object. of the] invention is. to provide a tool of this character that will automatically lock. itself in. spring compressing condition in order that the hands of the mechanicmay be employedfor removing. the pin after the spring has-become: compressed. A. further object resides in the provision of a tool that is of extremely simple. construction. and that may be operated by unskilledv workmen and that is adapted to have. associa-tedtherewitlli' various sizes and shapes of spring cup enga ingjiaws for enabling the tools to be employed in. the come pressing. of; springs that I surround the. valve stems of. various types of motors.

Other objects will become. apparent as the nature ofthev invention, is better understood, the same comprisesthe novel form, combination, and arrangement of. parts..hereinafter more fully described, shown in the accompanying drawing and claimed.

In: the drawings wherein like: reference characters indicate I throughout. the various views'.

Figure 1' is a fragmentary seetionthr'ough a conventional. form of motor, the spring of thevalve disclosed being. shown: in compressed condition through reason off ny improved tool which is disclosedin side elevation. j

Figure 2 is a top plan View ofthe tool.

Figure 3 is a longitudinal section of the same in collapsed condition.

Figure 4 is a perspective of the type of valve spring cup engaging jaw adapted to be employed in'conzjunction with the present tool. Y

Figure 5 is a fragmentary view partly in elevation and partly in cross section of a substantially improveand simplify tools of corresponding; parts preferred form of socket wrench that is to} be employed in the operation of my tool, and. g p p Figure 6 isa fragmentary perspective of one. of the bar members ofthetool for more clearly disclosing, the construction of theend thereof for receiving said valve spring cup law.

Now having particular reference to the drawings, my novel springcompressor constitutes the provision of a pair ofmetal" bars 5 and 6 preferably of. square shape in cross section that are arranged in superposed rela- 'tion as clearly shown in Figures 1 and? 3i The forward end of the lowermost bar 6 is forked as at 7: to permit of the engagement of the same over the valvestem A directly above the valve tappet guide B of the motor. The forward endof'the upper most bar 5i formed with a rounded socket 8 for receiving the circular shank 9Ijof a semi-scircu'lar shaped jaw 10' that is formed with an inwardly extendingfl'angle 11 at its lower end, said jaw adapted to engage around the valvo spring'cup C that supports the lower end of the valveclosing spring D of the. motor, asdisclosed in Figure 1. Said shank 9- of the jaw is provided adjacent the j aw" end thereof with lug 12' that is adapted" for engagement within a slot 13 at' the socketed end of the top bar 5 for" prevent? ing' the turning of the jaw therein. Atthis point it be well to state thata toolof this character is equipped with a large number of j'aws of varlous. sizes in order to accommodate the attachment of the bar to; various sizeso'f spring retaining cups. j

Pivoted within a vertical opening. 14 in the lowermost'bar 6 adjacent the forward end thereof as at I5 is the lower endiofa metallic arm '16 that extends upwardly through an opening 17 in the uppermostbar 5', the rear edge of this. arm bein toothed as at 1 8 for cooperation with a cross strip 19 of metal that is embedded within the lower side of thebar 5 at the opening' 17, the inner edge thereof" engaging overisaid opening to be engaged by saidte'ethas clearly shown in Figure 3;" Arranged within a channel 20 in the bar 5 rearwardly of the socket 8 in the forward end thereof is an expansih'lecoil spring 21 that serves to i normally maintain the. arm in. positive. en-

gagement with the strip 19 and consequently from the bar 6 adjacentthe rear end thereof and has sliding movement through an opening 23 in the bar 5 adjacent its ends. Fur

thermore said pin prevents the canting of 1; the upper bar 5 with respect tothe lowerbar 6 when pressure is applied to the forward ends thereof during the contracting ofthe spring D which is brought about by the movement of said bars away from each other.

Arranged loosely in the lowermost bar 5 directly forwardly of the pivotal arm 16 is a cross pin 24 headed at one end as at 25 and being threaded at its opposite end to receive a nut 26 Toggle links 27-27 are rigidly secured at their lower ends to the opposite ends of said pin 24 inwardly of the head and nut 25 and 26 respectively, these links being interconnected at their upper ends bya cross pin 29 that rides upon the under surface of the upper bar 5 when the pin 24 is turned by reason of a socket wrench preferably of the type shown in Figure 5, that is adapted to bedisposed over the head 25 of the pin as shown in Figure 2 for thus moving the upper bar 5 in an upward direction with respect to the lower bar 6 and consequently compressing the spring D in the manner as clearly disclosed in Figure 1.

'Extending loosely through thelowe-rmost bar 6 directly forwardly of the vertical pin 22 is a cross pin 30 connected to the opposite projecting ends of which are links til-31 that extend upwardly along opposite sides of" the uppermost bar 5 and are interconnected above said bar with a cross .pin 32 that rides upon the top surface of the bar 5 during the movement of the same to and away from the lowermost bar 6. Said links 3131 are connected to the toggle links 27-27 through reason of relatively elongated links 33--33 in order that as the togglelinks 27 move, in opposite directions, said links 31 will move in a complementary direction and in View of the cross pin 32 connecting said links 31, the uppermost bar 5 will be caused to move in a true horizontal plane with respect to the lowermost bar,

and thus prevent the binding of the same upon the pin 22 which would otherwise result.

The adjacent sides ofthe bars 5 and 6 are formed with rounded notches 5 and 6' at their forward ends for the reception of the connecting pin 29 between vthe toggle links 27-27 when the bars are moved into engagement as disclosed in Figure 3.

Also, the upper edges of the connecting links 33-33 are notched as at 33 adjacent the links 3131 for receiving the heads of traction of the pin E.

the cross pin 32 for permitting said bars to bearranged inthe face to face relation as shown in said Figure 3.

In operation the tool while in collapsed condition is actuated as to engage the forked end 7 of the bar 6 over the valve stem A directly above the tapped guide B, and the jaw 10 beneath the valve springcup C. i A wrenchis then applied to the nut 25 of the pin 24 and then turned downwardly for rotating the pin 24 within the bar which rotation will obviously raise the toggle links 27 27. The pressure of the connecting pin 29 of said toggle links will force the upper bar 5 away from the bar 6 in true parallel relation therewith for consequently compressing the spring and raisingthe cup C from off of the retaining pin E, thus permittin the same to be withdrawn. During the upward movement of the bar 5 with respect tothe bar 6 the strip 19 of said bar 5 will ratchet over the teeth 18 of the pivotal arm 16 and be engaged within the teeth for retaining the bar inthe position to which the same is moved, thus permitting the workmen to withdraw both hands from the tool, facilitating the use of the same in the re- Preferably the type of wrench employed in the turning of the pin 2 1 is as shown in Figures 1, 2 and 5, the same constituting the provision of a bar-like handle 35 upon the front end of which isslidably arranged a nut receiving socket member 36. At the forward end of a handle is a cross pin 37 adapted for engagement within cross slots in the forward side of the socket in order I that the socket may be moved around the bar and retained in proper position by the action of an expansible coil spring 38 that surrounds the bar between the sockets and a an abutment pin 39 arranged in said bar.

Even though I have herein shown and described my novel tool as comprising certain detail structural elements, it is never theless to be understood that minor changes may be made therein without effecting the spirit and scope of the appended claims.

' Having thus described the invention, what I claim as new and desire to secure byLetters Patent is 1. A valve spring compressor of the class 2 described comprising upper and lower bars arranged in superposed relation, an anchoring fork carried by theinner end of the lower bar'for engagement with a stationary part of the engine, a removable jaw implement carried by the inner end of the upper bar, a rigid guide pin carried by the outer end of the lower bar and extending through a guide opening in the upper bar, a pin mounted for oscillation upon the intermediate portion of the lower bar, sisvating andlowering toggle links rigidly fastened to said pin, a connecting pin be in sliding contact with the underside of the tween the upper ends of said toggle links said upper bar and retaining means cooperable with said bars.

2. A valve spring compressor of the class described comprising upper and lower bars arranged in superposed relation, an anchoring fork carried by the inner end of the low' to said pin a connecting pin between the upper ends of said toggle links in sliding contact with the underside of said upper bar, and retaining means. cooperable with said bars. I

3. A valve spring compressor of the class described comprising upper and lower bars arranged in superposed relation an anchoring fork carried by the inner end of the lower bar for engagement with a stationary part of the engine, a removable jaw implement carried by the inner end of the upper bar, a rigid guide pin carried by the outer end of the lower bar and extending through a guide opening in the upper bar, a pin mounted for oscillation upon the intermediate portion of the lower bar elevating and lowering toggle links rigidly fastened to said pin, a connecting pin between the upper ends of said toggle links in sliding contact with the underside of said upper bar,

and. retaining means cooperable with said bars, said retaimng means comprising a toothed pawl pivotally mounted on the 10W".

er bar and extending upwardly through an opening in the upper bar, and, a tooth ongaging strip carried by said upper bar and located in said last named opening.

the corresponding end of the upper bar, a

cross pin mounted for oscillation upon the lower bar, toggle links rigidly connected at 4. A valve spring compressor comprising their lower ends to said cross pin, a connecting. pin between the upper ends of said toggle links in slidable contact with the underside of said upper bar, a second cross pin mounted for oscillation upon said lower bar,

additional toggle links connected with said second cross p111 and extendlng up and above said top bar, a connecting pin between the upper extended ends and said second-named toggle links slidably contacting the upper side of the upper bar, connecting links between the respective toggle links, a keeper plate provided on said upper bar, a spring pressed and toothed latch carried by the lower bar and extending upwardly through an opening in the upper bar and engageable with said keeper plate. In testimony whereof I aflix my signa ture. 7 HATTIE M. COLLINS. 

